Machine for trimming blanks.



R. L. WILCOX & C. O. PEIITJEAN.

MACHlNE FOR TRIMMING BLANKS.

APPLICATION FILED MAR. 28.19l8

Patented Feb. 18, 1919.

Y L IF E H m m M Mr; 4 dd n m Wm Wm A m mb {a B E E m a B mmmm R. L.WILCOX & C. 0. PETITJEAN.

MACHINE FOR TRIMMlNG BLANKS.

APPLICATION FILED MAR. 28. 191B Paiented Feb.18,1919.

6 SHEETS-SHEEI 2.

401mm! apmyem.

AfToRNEY R. L. WILCOX & C. O. PEHTJEAN.

MACHINE FOR 'IRIMMING BLANKS.

APPUCATION FILED MAR- 28. 19KB Patented l u V R. L. WILCOX & C. 0.PEHTJEAN.

MACHINE FOR TBIIVIMING BLANKS.

APPLlCATlON FILED MAR 2B 1918 LQQBQ Patented Feb. 18, 1919.

6 SHEETS-SHED 4.

INVENTORS.

' ITOENEY R. L. WILCOX &C. 0. PETITJEAN.

MACHINE FOR TRIMMING BLANKS. APPLICA'HONHLED MAR. 28. I918 L%%,W&Patented Eeb.18,1919.

ll/l/l/ll/l/l/ALWI/ ZZZZ! ATTORNEY R. L. WILCOX & c. 0. Pmmmw.

MACHINE FOR TRIMMING BLANKS. APPLICATlON FLED MAR. 28. 1918 M213Patented Feb. 18, 1919.

6 SHEETSSHEEI 6.-

m'roRNE v chines which will cut the JaIcnn nns'rna WILCOX CLIFFORD o.PETITJEAN, or wn'rnnnnnr, commem- CUT, nssmnons' TO THE WAT'EBBURYFARREL FOUNDRY AND MACHINE COMPANY, or vrA'rnJaBnnY, CONNECTICUT, aCORPORATION or CONNECTICUT.

MACHINE FOR TRIMIVIING BLANKS.

Application filed March 28, 1918'. Serial 0. 225,328.

To all whom it may concern:

Be it known that we, RICHARD LESTER WILCOX andCLIFFoRo O. PETITJEAN,both citizens of the United States, and residents of Waterbury, Eouiityof New Haven, State of Connecticut, have invented certain new and usefulImprovements in Machines for Trimming Blanks, of which the following isa specification.

Our invention relates to machines for trimming blanks and moreespecially to mablanks for bolts, nuts, screws or the like, so as tochange either their shapes or sizes. Such machines have as one of theirobjects, among others, the

cutting thesquare, hexagonal, octagonal or other shaped heads on bolts,the trimming and sizing of nut blanks, the cutting of two flat sides ona round head to form shackle bolts, the trimming of round screw heads toaccurate size, operations. Herein we have used the term poly on orpolygonal to mean any shape w ich as one or more flat sides, and it willbe understood that 'bya trimmed section we mean any section, whethercircular, polygonal or otherwise, which has been out One of the objectsof our invention is to provide a machine which will cut a blank quicklyand efficiently without tearing the and many other similar metal, so asto produce at a single operation,

and ina minimum amount of time, a product with a superior finish to thecut surface. Heretofore such trimming operations have been usuallycarried out b passing the blank through'a die having a suitably shapedopenlng therein in such a way that the cutting edges of the die enterthe blank by cutting for a short distance and then, the resistance tothe cutting pressure having been sufficiently decreased, the remainingmetal is practically torn from the blank, leaving the faces of the blankrough and, in most cases, with depressions below what should be thelevel of the face. For some classes of work, the blanks thus formed areundesirable because of their unsightly and unfinished ap pearance. I

Anotherobject of our invention is to provide a means by which blanks maybe trimmed automatically with amount of time, and with the leastexpendi- Specification of Letters Patent.

a modification;

11 is a modification of the blank feed-- trated machine, these, I'justments for the dies;

a minimum Patented rein.

l8, rare.

ture of energy, while at the same time, pro- ELClIIIIIg a product ofsuperior quality and With these and other objects in view, our inventionconsists of certain novel features of construction, combination andarrangement of parts as will be more fully described and pointed out inthe appended claims.

' In the drawings, Figure 1 represents a side elevation of one form of amachine embodying our invention which we have chosen for purposes ofillustration, some of the well known parts being omitted;

Fig. 2 is a plan view of the machine illustrated in Fig. 1;

Fig. 3 is a vertical section of a part of the machine illustrated inFigs. 1 and 2, taken along the line 33, which is the center lineofoperation of the machine;

Figs. 4; and 5 are similar to Fig. 3 but with some of the parts shownin-difi'erent relative positions;

Figs. 6 and '7 show a portion of the blank feeding mechanism in twodifl'erent positions;

Fig. 8 is a side view, looking in the direction of the arrow 8 of Fig.6, of the end of the blank feeding chute;

Fig. 9 is a sectional view of the chute taken on the line 99 of Fig. 8;

Fig. 110 is a plan view of a portion of the blank feed cut ofi'slideadapted for one kind of blank; I

Fig. 10 is the same as Fig. 10., showing Fi ing ngers;

Fig. 12 is a' partial section through the dies showing a portion of theblank feeding fin ers;

ig. 13 is a front of the illustrated machine; and Fig, 14: is a frontview-ofthe movable die of the illus- Fig. 15 is a detail of actuatingmechanism; 7

Figs. 16, 17 and 18 are partial sections through the illustrativecutting tools or dies, showing successive steps in the forming of thehead of a bolt blank, which operation hais been adopted for purposes ofillustration on y the blank feeding views showing the adview of thefixed die 7 these shoulders may die in the holder 15 for a purpose to betion to gate 23 may .be

the frame 10 and held in place by one of an innumerable number of'usesto which our invention may be put), the die 11 is illustrated with ahexagonal .opening 131 therethrough and with cutting edges 13 formedaround this hexagonal opening (Figs. 3, 13 and .16). The die 11 is shownseated against a finishin tool 14 (in this instance, a planishing d1e)which will be described later,'and the dies 11 and .14 are held in aholder 15 by 'gi'bs 16. to the .frame 10. Preferably, and-asillustrated, the die 11 has a circular exterior which fits intoacircular opening in the holder 15. A shoulder (or shoulders) 111 isprovided on either side of the die, as shown best in Fig. '13 andadjusting screws 17-17 contracting with be used to rotate the pointedout hereinafter. v

The finishing tool 14 has an opening 141 therethrough and theframe 10 isprovided with abacking plate 19 therethrough an op ning 20 through theframe 10.

Sli ingly mounted on a slideway 21 of 18 having an opening is ,a maingate 23. On the front of this gate is'mounted a cutting die 24, whichalso in the form illustrated, is provided with a hexagonal opening 25therethrough and cutting edges 26 (Figs. 3 and 14). The die 24 restsagainst a backing plate 27 and is held in a holder 28 which is mountedfor horizontal motion in a second holder'29, being held in a V-shapedslideway 281 (Fig. 12) at thev bottom of holder 29, and clamped thereinby a clamping gib 32. The die 24 is fastened in slide 28 in any suitablemanner. The horizontal motion of 'theholder 28 in relacontrolled by anadjusting-screw, as 30. mounted forvertical motion on the end of themain gate 23, bein held in a V-shaped slideway291 (at the right of Fig.14) by a clamping gib 292 (at the left of Fig. 14'),

and the vertical position of the holder 29 may be. controlled by anadjusting screw, as 31. These adjusting devices are best shown in Fig.14. I 1

Between the main gate 23- and therear of the frame 10 is a pair oftoggle links 33, 34,

the link 34 abutting agamst an adjustable abutment 35. This form ofadjustmentis well known and needs no further descripwhich communicateswith' gibs 22 The holder 29 is tion. It will be obvious that, as thetoggle formed of 'the links 33, 34 is made an broken, a reciprocatorymovement is im parted to the main gate 23.

Mounted on slideways 36 in the gate 23 and held in place by gibs" 37 isa secondary gate 38. Between the rear of the secondary gate 38 and arear wall of the main gate 23 is a pair of toggle links 39, 40. It willbe obvious that, as the toggle formed by these links is straightened andbroken, the secondary gate 38 will reciprocate within the gate 23.

Carried within a bushing 41 and held by a screw 42 is a pusher rod 43,one end of which extends into the opening 25 of the die 24 and the otherend of which bears against a threaded member 44, provided with anadjusting nut 45, the member 44 being threaded into, and nut 45 abuttingagainst, a portion of the secondary gate 38. The end of the rod 43projecting into the opening 23 slides-through a bushing 46 carried bythe main gate 23.

As operating. means for the toggle 33, 34, we provide a. connecting rod50 which, with the link'51, constitutes a second toggle operated byaconnecting rod 52, which connects to the main driving shaft 53 through acrank 54 formed thereon. The link 51 is mounted on bearings 55supportedin the frame 10.

The links 39, 40 are each connected to a connecting rod '56 which isalso connected to the main driving shaft'53 through a crank '57 formedthereon. Inasmuch as so much of the mechanism which has been thus fardescribed may be used to operate on 'any kind of ablank, we will nowdescribe the operation of the parts without reference to the formofblank operated on or to the method of feeding it, the latter of whichwill be more fully described hereinafter.

Assuming now that a blank, as B, is placed between the dies 11 and 24and in alinement with the openings therethrough, (Fig. .3) the rotationof the shaft 53 will first straighten the toggle formed by the links 50and 51, which will, in turn, straighten the toggle formed by the links33 and 34 to move the main gate 23 to the left of'Figs. 3, 4 and 5.While this istaking place, the toggle 39, 40,.since it is operated bythe crank 57 on the main driving shaft 53, will also be moving but thecranks 57 and 54 are so positioned that the first effect, as the gate 23moves forward, is to cause a motion of the pusher rod 43 to the right ofFig. 3 relatively to the gate 23 so that, when the die 24 contacts withthe blank as shown in Fig. 12, the rod 43 will'have been moved withinthe die 24. The die 24 carried by the main ate 23 contacts with theblank and forces it to the left of Figs. 3, 4 and 5 until it, is heldbetween the dies 11 and 24 as rod 43 to the left F5 ing pushed throuinto the old naea ee shown in Fi 16. At this time the toggles formed byt e links 51, 50 and 33, 34 are approaching their straightened positionsso that the pressure available for cutting the blank is very great.Since the blank is held between a pair of dies, each die Will cut intothe blank for some distance until thedies reach the-position shown inFigs. 4 and 17. In this position, the die 24 has moved toits extremeposition to the left of Figs. 3, 4 and 5, and preferably this will be ata point just before the dies 11 and 24 meet, which Will leave a smallportion of uncut metal B around the blank, as shown best'in Fig. l' l.

During-the forward motion of the gate '23, the toggle controlling thepusher rod 43, is operatedin'siiha way that the rod 24. But; it will beseen by a comparisonof Figs. 4 and5that further rotation ofthe mainshaft '53 will now cause a quick straightening of" the toggle 39, 40 andthis will'result in a rapid motion of the pusher of Fig. 4. The rod 43contacts with the blank and pushes it through B illustrated,

' sliding bushing carrying a second bush 1 43 has been held behind thefaceof the die the die 11, as shown inFig. 18. This results in trimminga'wa the uncut portion the metal left by the dies 11 and 24.

Preferably, 33 and 34 and their operating mechanism so that, just beforethe rod 43 contacts with the blank, the to gle 33, 34 is moved past thecenter or bro gate 23 to the right of Fig, 3. This position of thetoggle is shown'in Fig. 5. This re- B' of lieves the pressure on themetal left uncut by the dies Hand 21, while the blank is beh the-die 11byithe rod 43 and gives space or the chip formed by the shavingoperation, resulting from forcing the blank through the die 11, Withoutthis extra space, anew chip would be forced chip which fills the spacebetween the dies. 1

Obviously, the motions of the main gate 23 andth'e rod 43 could beobtained byinany different mechanisms, and particularly by cams, but thePtoggles illustrated are especially adapted for that purpose and we havefound that it is possible to give the desired motions to the togglescrank shaft, which not the number of parts,. veryrigid construction. 1

If desired, thepusher or its equivalent may bedispensed with, even whenthe cut-. ting is stopped before all of the metal is removed. The thenbe finished in the usual manner by a punch and die, to remove theremainin metal. lBut'such second operation is pre by cranks on a singleonly greatly reduces but also provides a erably dispensed with bycompleting the finishing in our present machine, as we have described; 1

After the blank has been cut, it is obvious we arrange the togglelinkson slightly to draw th partly' finished blanks could that in whichit .be :seen b v and centering device for the as a carrier to aid inremoving the finish'ed the finished blank from this guide totheleftofFig. 4, a suit-r that it may be ejected from the die 11 byreturning it in the opposite direction to entered the die, butpreferably we arrange to push the blank entirely through the d e-and outof the -machine in the same direction in which the blank is movedwhile'being cut. It is also desirable to provide means to guide theblank in the cuttin dies, and such means will ary, of course, accordingto the character of the blank being out. For the particular blank whichis a blank for a hexagonal bolt, such guiding means may be a ing 61provided with an openin of the diameter of the shank of the blan As willan inspection of Figs. 12 and 16, the shan pushed into the bushingcenter it and support it. The bushing 60, carrying the auxiliary bushing61, is slidingly mounted in a; member 62 attached to the frame 10., andthe bushing 60 is given a longitudinal motion by a link 63 pivoted at 4and operated by' a lever 65 through a link 66 connected to' a cam lever67, carrying 61 which will both on the main driving shaft 53. A springserves tohold the cam 69 and to hold the bushing 61 yieldigs. 4 and ofthe illustrated blank will be cam roller 68 against the a cam roller ,68connecting with a cam 69 the guide 61', it serves not only as a guidingblank, but also blank for the machine, and in order to eject when thelatter is carried able ejecting one form of fixed stripper device shouldbe provided. As such device, we provide the rod 72, one end of which isheld within the bushing 60 and/ the opposite end-held adjustably inasutpport 73 attached through the rods 74 to therame 10. When the blankis passed through the'die 11, the bushing 61 carries it, to the left ofFig. 4, until theend offithe blank contacts with the stripper rod 72.Further motion of-the bushing 61 removes the support for the blanks whenitwill drop into the opening 20, from which it will fall into anysuitable recept'able. This is illustrated best in Fig. 18.

The main shaft 53 is driven 75, 76 from the fly wheel in the frame 10.

Preferably weprovide an automatic feed for the blanks which, in the formillustrated, is in many respects of a known type,

and we have illustrated, such a device as through gears shaft 77supported arranged to feed blanks of the type shown int &

y the automatic feed will be varied in accordance with the character ofthe blanks to be fed. In the form which we have illustrated the headedblanks B alide in the feed. chute 80, the heads being held'by anadjustable cover 81 the adjustment being provided by the slotted member82. The blanks are arvided with a detachable piece 831 having a of "thefinger cess 890' is carried from shaped so that,

projection 89 provided with a suitable recess 890 shaped to conform tothe shank of the-blank B and having a projection 90' continuing thisrecess 890 beyond the projection 89. The slide 83 is moved so that thisrethe chute 80 to the vertical plane of the center line of the cuttingdies, as shown in Figs. 6 and 7 In this vertical plane and above thedies is fastened a frame 91 on which is mounted a slide 92 carrying apair of feed tongs comprising finger levers 93-93 yieldinglyheldtogether by a spring 94. To the lower ends I levers 93-93, are removablyattached a pair of fingers 95-'95, which are when they are in the closedposition shown in Fig. 6, they will extend operation of the around theshank of'the blank B, adjacent theextension 90'on thecut-ofi transferslide 83. Reciprocatin motion is given to the slide 92 by the lin 93connected to the lever 94 pivoted at 952 and connected by link 96 withthe cam lever 97 carrying a cam roller 98 hearing against the cam 99. Aspring 100 serves to .hold the cam roller 98 against-its cam.

As the cut-off transfer slide 83 moves from.

its position shown in Fig. .7 with its end beneath the chute 80, itcarries the lowermost blank B from the chute .80 into the line oftransfer tongs 93, which at this timeare raised to the dotted lineposi-' tion shown in Fig. 7. The body portion of the slide 83 serves tocut off-the remainder of the blanks B in the chute 80, the most one ofwhich rests upon it.

the slide 83 is beneath the transfer tongs, as shown in Fig. 6, thefingers 95 descend, and, because of their yielding connection, passaround the blank and hold it, as shown in Fig. til-Then the fingers 95are ,raised somewhat to lift the blank from the slide 83 and the latterreturns to the position shown in Fig. 7 Thereupon the fingers 95 arecarried downwardly to bring the blank into lower- When B. It will beunderstood, of course, that I beneath the end of I in the fingers.

' most position shown with a pair of .these blank holders will haveconsiderable width, as shown in Fig. 12. This is in order to provide asextended a hold on the blank as possible to prevent the blank fromtilting in the fingers. It is possible to use this width of holder,because, the shank being long, a considerable portion thereof will bemoved into the bushing 61 before the dies 11 and 21 come very closetogether. On the other hand, if the blank B has a very short shank, itwill be obvious that, if the fingers 95 are as wide relatively as shownin Fig.- 12, there is a possibility that the shank of the blank will notenter the bushing 61 before it is necessary to move the fingers 95 toprevent their being caughtbetween the dies. For that and other reasons,We make the fingers 95 detachable from the finger levers 93 so that,when short blanks are used, relatively thin fingers may be substituted.Such a thin finger is shown in Fig. .11 at 951. This width is enough tohold short blanks without danger of tilting With such a relatively thinfingers, fingers 95 may be held in their downin Fig. 7 up to a laterpoint in the cycle of operations than is ossible with the relativelywide finger95.

e provide for this difference by a simple arrangement which enables theoperator of the machme'to adjust it for these two different timings ofthe motion of the fingers. For this purpose, we mount the cam 99 on thehub of a wheel 101 (used for a purpose not necessary to describe inconnection with our present invention) and we drive this wheel 101 andwith it the cam 99 from a key 102 in the drivin shaft 53 through asleeve 103. This s eeve 103, as shown in detail in Fig. 15, is providedon each side transverse slots, the slots on one side being marked 104,105 and on the opposite side, .106, 107. On the hub of the wheel 101 isformed a tongue 531 adapted to engage in one of the slots 105 or 106.The key 102 will engage one of the slots 104 or 107. 'Itwill be notedthat the angle which slot 107 makes with slots 105-106 that, as shown inFig. 2, the sleeve 103 is face againstthe hub of the wheel 101 and titidill

. cutting edges cutting a hexagon blank,

7 naoapoa cam 99 may be shifted to bring its operative part in correctrelation with the cycle for the narrow fingers 951 by removing the key102, taking d the sleeve 103, turning the sleeve 1 03 around so as tobring the opposite then turning the wheel 101, and with it the cam 99until the tongue 53]. on the hub 101- and the key102 will enter theslots now presented to each of them respectively. Because of thediflei'ence in the relation of the two slots on opposite sides of thesleeve 103, the cam 99 w1l1 now be held in its new position. While, ofcourse, the cam 99 can be shifted on the shaft 53 in any one of the wellknown manners, such adjustments usually involve considerable shifting onthe part of the operator before the desired new position is reached.With the simple means which we have illustrated, the two operatingpositions of the cam can. be obtained without care on the part of theoperator.

Preferably, when short blanks are used, we provide a special support onthe end of slide 83. In F ig. we have'illustrated such a modification,plate 832 having been substituted for plate 831 in Fig.10. The extension901 is shorter than of the short blank and at 903 for the shank of theshort blank. U 1

The dies 11 and 24 which we have chosen for purposes of .illustrationare of the, solid type and preferably have their respective 13 and 26formedby angular cuts across the face of the die so that, preferably,these cutting edges have an angular relation to the direction of motionof the dies. Preferably, so far as the arrangement of their cuttingedges are concerned, and. preferably they are arranged so that thecutting edge of one die is directly opposed and in alinement with asimilar cutting edge of the other die. For instance, as shown best inFigs. 13 and 14, if the dies are arranged for the cutting edges in eachdie will, of course, be arranged accordingly as hexagons around thecenter of the blank, and preferably so that each cutting edge of one diewill be in substantially the same plane with the corresponding cuttingedge of the opposite die. In order to bring about this arrangement, aswell as to aline the dies so that they will have a common axis, theadjustments heretofore described and especially illustrated in Figs. 13and 14, are desirable. By the adjustmcnts shown in Fig. 14, the die 24can be the key 102 and the hub of ting die 11. any device to finish thecut surfaces, suchextension 90, and plate 832 is-recessed at 902 for thehead the dies are similar,

shifted vertically and horizontally until its axis correspondsto theaxis of the die 11 and the 'die 11 may be rotated on this axis by screws17 until its cutting edges are in substantially the same plane as thecutting edges of die'24. I

Preferably, in order to secure the best finish to the product, thecutting edges of the die 24 are arranged so that they are somewhatfarther from the axis of the die thanthe corresponding edges, of the die11. Then, when the blank is cutbetween such a pair of dies, a smallamount of metal amount of metal is cut ofi as the ,blank is pushedthrough the die 11 by the punch 13. i llt will be understood that theadjustments for the rod 43 and for the bushing 61 and the stripper rod72 are provided to adapt the machine for varying sizes of blanks.

While not essential, we prefer to provide a finishing tool 14 directlybehind the cut- This finishing tool may be as a die arranged to take alight out over the surfaces or a planishing die arranged to smooth oriron the surface. is the form we have illustrated. This planishing-die 11 in the form illustrated is pro vided with an opening 141 similar tothe opening in the die 11 but with planishing surfaces slightly nearerthe axis of the blank than are the. cutting edges When such anarrangement is used, the rod 143 not only pushes the blank through thedie 11 but also through the planishmg die 14: and the planishingsurfaces of this die The latter smooth or. iron out the freshly cutsurfaces to remove any tool marks or the like left by the cutting dies.

It will be understood that our illustrated- I mechanism may be variedwithin wlde limits without departure from our. invention. The blankguide and stripping device may be varied within wide limits andmdeed forsome types of blanks, maybe entirely dispensed with. Particularly, ;suchdevices may be arranged so that the finished blank maybe ejected intothe space between the dies and in such case the bushing 61 Or itsequivalent would be moved ,to theright of Fig. 4 to push. out thefinished blank. I

tit

Whilewe have used solid dies for ur- I poses of illustration of ourpreferred 'orm of cutting tools, it will be obvious that the cuttintools used may be varied within wide hmits. Fo'r some purposes, suchtools may be any of the forms of tools ordinarily used in cuttingmetals, such as the ordinary planertools, used either singly or ingroupsforming a circle or polygon wlth their-cutting edges, or dies may beused, either of the solid type, as illustrated, or with separatecutters. Tn carrying out our preferred w ll form of invention, when twoopposed cut-- ting tools are used, the cutting edges on the tools willbe arranged so that eachpo nt of one edge. will have a correspondingo1nt on the opposin edge at approximately the same distance rom the axisof the blanks,

so thatthe opposed cutting edge will be in substantial alinement wltheach other. in

'with such direction. We refer herein to the edges being in substantialalinement for of course,-when that form of opposed cutting our inventionis used in which the blanks cut by one tool is slightly larger than theblanks cut by the opposing tool, the op-' posed edges can not be in'actual alinement, for one of them will be at a slightly greater distancefrom the center of the blank than the other edge. Nevertheless, sincethis difference in distance will seldom be very great,the opposededgeswill be in substantial alinement. Thus, in the form illustrated,the cutting edges for one side of the hexagon on one die will be in oneplane parallel to the axis of the dies, while the opposed edge will bein a parallel plane at a greater distance from the axis of the die. Butwe-refer to such two edges as being in substantial alinement.

Preferably, we arrange the cutting edges so that they are .in planesmaking angles with the direction of so as to throw the chips to one sideas the cutting takes place, but this is not essential. For instance,instead of the dies which we have illustrated and whichhave theiredgesangularly disposed to the direction of motion, we may use for somepurposes, dies in Y which the cutting edges are allin a common plane atri ht angles to the direction'of moalthough -.prefera'bly we make outcutting edges sothat opposed portions tion of motion of .trated, this-isnot essential. For instance,

have the. same slope in reference to the directhe tools, as we haveillusthe edge on one tool may be in a plane makmg an angle of 20 degreeswith'the direction of motion and the opposing edge "on the other toolmay make an angle of only 10 deeither one of the cutting tools maybe'fixed and the other movable and that when, in

we refer to moving the too s. toward each the dies being arranged withthe axes motionof the tools,-

rees.

It will also be understood that, if desired,

any relative movement of the tools which causes them to approach eachother, whether one is stationary and the other movable, or both aremovable.

We claim:

'1. In a machine of the class described, a pair of cutting tools withtheir cutting portions facing each other, the tools being relativelymovable toward and away from each other, tool moving means to cause thetools to cuta blank placed between them and to stop the cutting beforethe opposing cutting edges meet, and means to move the blan: past one ofthe cutting tools.

2.- In-a machine of the class described, a pair of cuttingtools withtheir cutting portionsfacing each other, the tools being relativelymovable toward other, a finishing tool in the rear of one of the cuttingtools, tool moving means to cause the tools to cut a blank placedbetween them and to stop the cutting before the opposing cutting edgesmeet, and means to move the blank past that cutting tool having thefinishing tool at its rear and past the finishing tool.

3. In a machine of the class described, a pair of oppositely disposeddies, each having an opening with cutting edges around it, one

of the openings extending through its die,

their openings in alinement, and being mounted for relative movementtoward and away from each other, die moving means for the dies and meansto move a blank through I the opening in one of the dies after the dieshave engaged the blank.

4. In a machine of the class described, a.

pair of 'oppositely disposed dies, each having a central openingtherethrough with cutting edges around it, the dies being arranged withthe axes of their openings in alinement and being mounted for relativemovement and away from each toward and away from each other, die movingmeans to cause the dies to cut a blank placed therebetween and to stopsuch cutting before the dies meet and means to move the glank, throughthe opening in one of the res.

5. In a machine of the class described, a

'. pair of oppositely disposed dies, each having a central openingtherethrough with cutting edges around it, the dies being arranged withthe axes of their openings in alinement and being mounted for relativemovement toward and away from each other, die movmg means to cause thedies to cut a blank placed therebetween and to stop such cutting -bef0rethe dies meet and a pusher movable through the opening in one die tomove the 6. In a machine of the class described, a

v blank thro h the o enin in the other die. the specification and the apended claims, fig p g naeaooe a central opening therethrough withcutting edges around it, the dies being arranged with the axes of theiropenings in alinement and being mounted for relative movement toward andaway from each other, die moving means to cause the dies to cut a blankplaced therebetween and to stop such cutting before the dies meet andthen' move them slightly apart and means to move the blank through theopening in one of the dies.

7. In a machine of the class described, a pair of oppositelydisposeddies, each having an opening with cutting edges around it, diemoving means for the dies and means to move the blank past the cuttingedges of the first die, the ,cnttingedges of the first die beingsubstantially in alinement in'the direction of motion ofthe dies withthe cutting edges of the second die and nearer the axis of the openingthan the cutting edges of the second die.

8. In a machine'of the class described, a

' pair of oppositely disposed dies, each having an opening therethroughwith cutting edges around it and the axes of the openings in alinement,d1e

moving means for the dies, and a pusher movable through the opening inthe first die to move the blank through the opening in the second die,the cutting edge of the second die being substantially in alinement inthe direction of motion of the dies with the cutting edges of the firstdie and nearer the common axis of the openings than the cutting edges ofthe first die.

9. In a machine of pair of oppositely disposed dies, each having acentral opening therethrough with cutting edges around it, the diesbeing arranged with and away from lid - a polygon,

- in one of the dies the axes of their openings in alinement and beingmounted for relative'movement toward each other, die moving means tocause the dies to cut a blank placed therebetween'and to stop suchcutting before the dies meet and then-move them slightly apart and apusher movable through the opening after they have been so drawn apart,to move the blank through the opening in the other die. 10. In a machineof the class described, a pair of relatively movable dies having acommon axis and each provided with a set of cutting edges arrangedaround the axis to form the polygons formed by each set being similarwith their sides substantially an alinement in the direction of motionof the les, cut a blank placed therebetween and to stop the cuttingbefore the dies reach each other and means to continue the motion of theblank through one of the dies.

11. In a machine of the class described, a

pair of relatively movable dies having a com-.

the class described, a

a polygon,

slightlylarger die moving means to cause the dies to I dies, and afinishing being similar with their sides substantially 1n alinement inthe direction of motion of the dies, die moving means to cause the diesto cut a blank placed therebetWeen and means to move the blank throughone of the dies.

' 12. In a machine of the class described, a pair of, relatively movabledies having a common axis and each providedwith a set-of cutting edgesarranged around the axis to form a P y ing similar with their sidessubstantially in alinement in the direction of motion of the dies, diemoving-means to cause the dies to cut a blank placed therebetween and tostop the. cutting before the dies reach each other, the'polygon oflarger than the polygon of the other die, and means to continue .themotion through the die having the smaller polygon.

13. In a machine of the class described, a

the polygons formed by each set beof p the blank one of the dies beingslightly I mon axis and each provided with a set of cutting edgesarranged a polygon, the polygons formed by each set being similar withtheir sides substantially inalinement in the direction of motion of thedies, die moving means to cause the dies to cut a blankplacedtherebetween and to stop the cutting before the dies reach each otherand-then moving the dies apart a hort distance, and means to'continuethe motion of the blank through one of the dies: 1 g

14. In a machine of. the class described, a pair of relatively movabledies having a common axis and each provided with a set ofcutting edgesarranged around the axis to form being similar with their sidessubstantially in alinement in the direction of motion of the dies, diemoving means to cause the dies to cut a blank placed therebetween and tostop the cutting before the dies reach each other and then moving thedies apart a short distance, the polygon of one of the dies being thanthe polygon of the other die, and means tocOntinue the motion of theblank through the die having the smaller polygon.

' 15. In a machine of the class described, a pair of relatively movabledies having a common axis and each provided with a set of cutting edgesarranged around 'theaxis'to form a polygon, the polygons formed by eachset being similar with their sides substantially in alinement in thedirection of motion of the tool at the rear of one of the diesconstructed and arranged to finish the faces of the blank produced. bythe dies, die moving means to cause the dies to cut a blank placedtherebetween and means to continue the motion of the blank through oneof the dies and past the finishing tool.

16. In a machine of the class described, a

around the axis to form the polygons formed by each set- 'motion of thedies,

pair of relatively movable dies having a common axis and each providedwith a set of cutting edges arranged around the axis to form a polygon,the polygons formed by each set beingsimilar with their sidessubstantially in alinement in the direction of motion of the dies, and apusher moving through one of the dies to move the blank through theother gie after the blank has been engaged by both 17 In a machine ofthe class described, a pair of relatively movable dies having a commonaxis and each provided with a set of cutting-edges arranged around theaxis to form a polygon, the polygons formed by each set being similarwith their sides substantially in alinement in the direction of diemoving means to cause the dies to cut a blank placed therebetween andto, stop the cutting before the dies reach eachother and a pusher movingthrough one of the dies to movethe blank through the other die after thecutting movement of the dies has been stopped.

motion of the dies,

between and to stop the cutting before the dies being arranged angularly18. In a machine of the'class described, a pair of relatively movable'dies having a common axis and each provided with a set of cutting edgesarranged around the axis to form a polygon, the polygons formed by eachset being similar with their sides substantially in alinement in thedirection of die moving mean to cause the dies to cut a blank placedtheredies reach each otherand then moving the dies; apart a shortdistance, and. a pusher moving through one of the dies to move the blankthrough the other die after the dies have been moved apart. $0

pair of relatively movable dies, having a- 19. In a machine of the classdescribed, a

commongaxis and each provided with a set .of cutting edges arrangedaround the axis to.

form a olygon, 'the polygons formed by each set eing similar with theirsides substantially in alinement in the direction of motion of the dies,and die moving means to cause the dies to cut a blank placedtherebetween, the cutting edges of the pair of dies being arrangedangularly to the direction of the axis.

' 20. In amachine of the class described, a pair of-relatively movabledies having a commonaxis and each provided-With a set of cutting edgesarranged around the axis to form a polygon, the polygons formed by eachset being similar with their sides substantially in alinement in thedirection of motion of the dies, and die moving means to cause the diesto cut between, the cutting edges of the pa1r of to the direction oftheaxis and with each cutting edge of one die substantially parallel tothe op-v posing cutting edge of the other die.

; being similar,

a blank placed there- 21.In a machine of the class described, a pair ofrelatively movable dies having cutting edges, the dies being constructedand arranged so that the cutting edges of the dies are similarlydisposed around the axis of each die, a support for each of the dies,adjusting means on the supports constructed and arranged to permit thedies to be moved relatively in planes at right angles to the directionof motion of the dies to bring the opposed cutting edges of the diesinto substantial alinement with each other, and die moving means for thedies.

22. In a machine of the class described a pair of relatively movabledies having cutting edges, the dies being constructed and arranged sothat the cutting edges of the dies are similarly disposed around theaxis of each die, a support adjusting means on the supports constructedand arranged to permit the dies to be moved relatively in their supportsto bring the'opposed cutting edges of the dies into substantialalinement With each other,.and die moving means for the dies.

23. In a machine of the class described, a pair of relatively movabledies having a common axis and each provided with a set of cutting edgesarranged around to form a polygon, the polygons formed by each set beingsimilar, a support for each of the dies, adjusting means on the supportsconstructed and arranged to permit the dies to be moved relativelycrosswise and around the axis to bring the corresponding sides of thepolygons into alinement and the centers of the polygons into thecommon-axis and die moving means to cause the dies to cut a blank placedtherebetween.

24:. In a machine of the class described, a pair of relatively movabledies having a common axis and each provided with a set of cutting edgesarranged around the axis to form a polygon and an opening through eachdie bounded by the polygon, the polygons formed by each set of cuttingedges die moving means to cause the dies to cut a blank placedtherebetween, a blank holder movable through the opening of one of thedies and adapted to receive the blank as it passes into the die, andmeans to move the blank through the die provided with the blank holder.

25. In a machine of the class described, a pair of relatively movabledies having a common axis and each provided with a set of cutting edgesarranged around the axis to form a polygon and an opening through eachdie bounded by the polygon, the polygons formed by each set of cuttingedges being similar, die moving means to cause the dies to cut a blankplaced thercbetween, a blank holder movable through the opening of oneof the dies and adapted to receive the blank as it passes into the dieand the axis o aii v provided with the rhea-nee a pusher movable throughthe opening in the other die to move the blank through the die providedwith the blank holder.

26. lln a machine of the class described, a pair of relatively movabledies having a coon axis and each provided with a set oi cuttingedgesarranged around the axis to form a polygon and an opening through eachdie bounded by the polygon, the polygons formed by each set oi" cuttingedges being similar, cause the dies to cut a blank placed therebetween,a blank holder movable through the opening of one of the dies and adaptto receive the blank as it passes into the die, means to move the blankthrough the die provided with the blank holder and means to move theblank holder to carry the blank away from the blank moving means.

27. In a machine of the class described, a pair of relatively movabledies having .a common and each provided with a set of cutting edgesarranged around the anis to term a polygon and an opening through eachdie bounded by the polygon, the polygons termed by each Set ol cuttingedges being similar, die moving means to cause the dies to cut a blankplaced there-. between, a blank holder movable through the opening otone ot the dies and adapted to receive the blank as it passes into thedie, means to move the blank through the die blank holder, means to movethe blank holder to carry the blank away from the blank moving means andmeans to eject the blank trom the blank holder.

Q8, in a machine the class described, a pair at relatively movableoppositely dis posed cutting tools, a gatesupporting one of the tools,means reciprocate the gate to move the tool carried thereby, a pusher onthe gate and movable relatively thereto toward and away trom the othertool, and means to ently 0t motion of gate.

29. lo machine oil the class described, a pair ct relatively movableoppositely dis posed cutting tools, a movable gate su porting one oi thetools, a pusher on the gate and movable relatively thereto, means tomove the gate toward and then away iromthe other tool and means to movethe pusher toward. the other tool when the gate begins to move away fromthe other tool.

80. in a machine oil the class described, a

pair of relatively movable oppositely disposed cutting tools, a movablegate supporting .ie ot the tools, a pusher on the gate and novablerelatively thereto, means to move we gate toward and away item the othert and means to move the pusher town other tool independently ot themotion to gate,

fill, l achine of the class described, a

die moving means to shalt,

reciprocate the pusher independpair of relatively movable oppositelydisposed cutting tools,- a movable gate supporting one of the tools, apusher on the gate and movable relatively thereto, means to reciprocatethe gate toward and the other tool, a toggle device 011 the gateconnected to the pusher, and means to move the toggle to move the pusheron the gate toward the other tool.

32. In a machine of the class described, a pair ofrelatively movableoppositely disposed cutting tools, a movable gate supporting one of thetools, a pusher on the gate and movable relatively thereto, a toggledevice to reciprocate the gate toward and away from the other tool, atoggle device on the gate connected to the pusher, adriving shalt, acrank on the shaft connected to the ill gate moving toggle, a crank onthe shaft connected to the pusher moving toggle, said cranks beingarranged relatively so as to move the pusher toward the other tool alterthe gate has commenced to move away l'roin the other tool,

-33. lo a machine of the class dmcribed, a pair oil relativel movableoppositely disposed cutting tools, a movable gate supporting one oil thetools, a pusher on the gate and movable relatively thereto, a toggledevice to reciprocate the gate toward and away from the other tool, atoggle device on the gate connected to the pusher, a driving a crank onthe shalt connected to the gate moving toggle, a crank on the shaltconnected to the pusher moving toggle, said too cranks being arranged.relatively so as to move the pusher toward the other tool alter the gatehas moved toward the othe tool,

.34. In a machine of the class described, a pair of relatively movableoppositely dis lot posed cutting tools, a movable gate support ing oneof tools, a pusher on the gate and movable relatively thereto, meanstoreciprocate the gate toward and away trom the other tool, a toggledevice on the gate l-lll connected to the pusher, means to move thetoggle to move the pusher on the to ward the other tool, a blank holderadjacent the other tool and means to move the blank holder awayl'rom'the other tool as Hit the pusher moves toward it.

85. lln a machine oil the class described, a pair of relatively movableoppositely distil posed cutting tools, blank holding means to hold ablank away from to 7 till moving its pair a blank holder adjacent one ofthe tools, the fingers being arranged to hold the blank until the otherof thetools moves the blank into the blank holder and means to move thefingers away from the blank after the blank is engagedby the blankholder.

37. In a machine of the class described, a pair of relatively movableoppositely dis posed cutting tools, means to move the tools toward eachother, fingersarranged to hold a blank between the tools, a blank holderadjacent one of the tools, the fingers being constructed and arranged tohold the blank while the other tool moves the blank into the blankholder, supports for the fingers, the fingers being detachably connectedto the supports, whereby the width of gers may be changed according tothe length of the blank to be operated on, means to move the fingersaway from the blank to escape contact: with the tools and means wherebythe-time of beginning of movement of the fingers relative to themovement of the tools may be changed to agree with the width of fingersused.

38. In a machine of pair of relatively posed cutting tools, means tomove the tools toward each other, fingers arranged to hold a blankbetween the tools, a blank holder adjacent one of the tools, the fingersbeing constructed and arranged to hold the blank while the other toolmoves the blank'into the blank holder, supports for the fingers, thefingers being detachably connected to the supports, whereby the width ofthe fingers may be changed according to the length of the blank to beoperated on, means, including a cam, to move the fingers away from theblank to escape contact with the tools, and means whereby the operativeposition. of the cam in relatlon to the tool movthe class described, a

ing means may be changed to agree with the width of fingers used.

39. In a machine of of relatively movable oppositely disposed cuttingtools, means to move the tools toward each other, fingers arranged tohold a blank between the tools, a blank holder adjacent the tools, thefingers being constructed and arranged to hold the blank while the othertool moves the blank into the blank holder, supports for the fingers,the fingers being detachably connected to the supports, whereby thewidth of the fingers may be changed according to the length of the blankto be operated on, means, including a cam, to move the fingers away fromthe blank to escape contact with the tools, a shaft connected to thetool moving means, the cam being loosely mounted on the shaft, a member.connected to the shaft, and a collar between the member and the cam, thecam and the member each having a tongue and slot movable oppositelydis-' the class described, a

connection with the collar, the cam, member and collar being constructedand arranged to connect the cam to the shaft in different positions,relative to the tool moving means, according to which side of the collaris next to the member.

40. In a machine of the class described, a cutting tool, means to move ablank against the cutting tool, fingers arranged to hold a blank infront of the tool, supports for the fingers, the fingers beingdetachably connected to the supports, whereby the width of the-fingersmay be changed according to the length of the blank to be operated on,means, including a cam, to move the fingers away from the blank toescape contact with the blank moving means, a shaft connected to theblank moving means, the cam being loosely mounted on the shaft, a memberconnected to the shaft, and a collar between the member and the cam, thecam and the member each having a tongue and slot connection with thecollar, the cam, member and collar being constructed and arranged toconnect the cam to the shaft in different positions, relative to theblank moving means, according to which side of the collar is next to themember.

41. In a machine of the class described, a die having an openingtherethrough, means to move a blank through the opening, a movable blankholder within the opening and adapted to receive the blank, means-tomove the blank holder out of the opening to carry the blank from theopening and means to release the blank from the blank holder after theblank is out of the opening.

42. In a machine of the class described, a die having an openingtherethrough, means to move a blank through the opening, a movablebushing within the opening and adapted to receive the blank, means tomove the bushing out of the opening to carry the blank from the openingand a fixed stripper constructed and arranged to eject the blank fromthe bushing as the bushing moves.

43. In a machine of the class described, a die having an openingtherethrough, means to move a blank through the openin a movable bushingwithin the opening an adapted to receive the blank, means whereby theposition of the bushing may be adjusted toward and away from the dies,means to move the bushing out of the opening to carry the blank from theopening and a fixed stripper constructed and arranged to eject the blankfrom the bushing as the bushing moves.

44. In a machine of the class described, a pair of relatively movableoppositely disposed dies, each having an opemng with cutting edgesaround the peri hery thereof, each of the openings being su stantiallythe shape of the finished cross section of the blank, die moving meansto cause the dies to menses cut a blank from either end While the blankis stationary, and means'to move the blank axially through one of thedies.-

45. In amachine of the class described, a pair of relatively movableoppositely disposed dies, each having an opening with cutting edgesaround the periphery thereof, each of the openings being substantiallythe shape of the finished cross section of the blank, die moving meansto cause the dies to 10 out w a blank While the blank is stationary andto stop the cutting before t e dies meet, and means to move the blankaxially through one of the dies.

RICHARD LESTER WILCOX.

CLIFFORD O. PETITJEAN.

